put more protection on RPC

src/dnode/src/dnodeMgmt.c

@@ -413,7 +413,6 @@ static void dnodeUpdateMnodeInfos(SDMMnodeInfos *pMnodes) {
   tsDMnodeIpSet.numOfIps = tsDMnodeInfos.nodeNum;
   for (int32_t i = 0; i < tsDMnodeInfos.nodeNum; i++) {
     taosGetFqdnPortFromEp(tsDMnodeInfos.nodeInfos[i].nodeEp, tsDMnodeIpSet.fqdn[i], &tsDMnodeIpSet.port[i]);
-    dPrint("mnode index:%d, for peer %s %d", i, tsDMnodeIpSet.fqdn[i], tsDMnodeIpSet.port[i]);
   }
 
   dnodeSaveMnodeInfos();

src/rpc/src/rpcMain.c

@@ -420,13 +420,13 @@ void rpcSendResponse(const SRpcMsg *pRsp) {
   pConn->rspMsgLen = msgLen;
   if (pMsg->code == TSDB_CODE_ACTION_IN_PROGRESS) pConn->inTranId--;
 
-  rpcUnlockConn(pConn);
-
   taosTmrStopA(&pConn->pTimer);
   // taosTmrReset(rpcProcessIdleTimer, pRpc->idleTime, pConn, pRpc->tmrCtrl, &pConn->pIdleTimer);
   rpcSendMsgToPeer(pConn, msg, msgLen);
   pConn->secured = 1; // connection shall be secured
 
+  rpcUnlockConn(pConn);
+
   return;
 }
 
@@ -1095,10 +1095,10 @@ static void rpcSendReqToServer(SRpcInfo *pRpc, SRpcReqContext *pContext) {
   pConn->reqMsgLen = msgLen;
   pConn->pContext = pContext;
 
-  rpcUnlockConn(pConn);
-
   taosTmrReset(rpcProcessRetryTimer, tsRpcTimer, pConn, pRpc->tmrCtrl, &pConn->pTimer);
   rpcSendMsgToPeer(pConn, msg, msgLen);
+
+  rpcUnlockConn(pConn);
 }
 
 static void rpcSendMsgToPeer(SRpcConn *pConn, void *msg, int msgLen) {